1. What is BMR and TDEE?

BMR (Basal Metabolic Rate) is the number of calories your body needs at complete rest to maintain basic physiological functions. TDEE (Total Daily Energy Expenditure) is the total number of calories you burn in a day, including physical activity.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor equations:

Where:

• \( Weight \) — Body weight in kilograms
• \( Height \) — Height in centimeters
• \( Age \) — Age in years
• \( Gender\_factor \) — +5 for men, -161 for women
• \( Activity\_factor \) — Multiplier based on activity level (1.2-1.9)

3. Importance of BMR and TDEE Calculation

Details: Knowing your BMR and TDEE helps with weight management, whether your goal is weight loss, maintenance, or muscle gain. It provides a scientific basis for determining daily calorie needs.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, age in years, select gender and activity level. For accurate results, use your most recent measurements.

5. Frequently Asked Questions (FAQ)

Q1: Why use Mifflin-St Jeor equation?
A: It's currently considered the most accurate BMR equation for healthy individuals.

Q2: What are typical BMR values?
A: Average BMR is about 1500-2000 kcal/day for women and 1800-2500 kcal/day for men, but varies by individual.

Q3: How accurate is the TDEE calculation?
A: It provides a good estimate, but actual energy expenditure can vary based on factors like muscle mass, genetics, and NEAT (non-exercise activity thermogenesis).

Q4: Should I use BMR or TDEE for weight loss?
A: TDEE is more relevant as it accounts for your activity level. For weight loss, consume fewer calories than your TDEE.

Q5: How often should I recalculate?
A: Recalculate whenever your weight changes significantly (±5kg) or your activity level changes substantially.